Donner MAMP2 Stereo Audio Amplifier User Manual

Introduction

Thank you for choosing the Donner MAMP2 Stereo Audio Amplifier. This powerful 2-channel receiver delivers 600W peak power (60W RMS x 2) and offers a wide range of connectivity options, including Bluetooth 5.3, USB, RCA, optical, coaxial, FM radio, and dual microphone inputs. Designed for an enhanced audio experience, the MAMP2 is perfect for home audio setups, karaoke, and various multimedia applications. Please read this manual thoroughly before operating the device to ensure proper use and optimal performance.

Important Safety Information

• Power Source: Ensure the amplifier is connected to a power supply that matches the voltage specified on the unit.
• Ventilation: Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Water and Moisture: Do not expose this apparatus to rain or moisture. Do not place objects filled with liquids, such as vases, on the apparatus.
• Heat: Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Cleaning: Clean only with a dry cloth.
• Servicing: Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
• Speaker Impedance: Ensure connected speakers have an impedance of 4-8 ohms.

Package Contents

Please check that all items are present and in good condition:

• Donner MAMP2 Stereo Receiver
• Remote Control (AAA batteries not included)
• User Manual

Product Overview

Front Panel Controls

Figure 1: Front Panel Layout of the Donner MAMP2 Amplifier, showing various inputs and control knobs.

1. Power Switch: Turns the unit ON/OFF.
2. Talk-over Button: Lowers background music volume when microphone is in use.
3. MIC VOL Knob: Adjusts microphone volume.
4. ECHO Knob: Adjusts microphone echo effect.
5. BASS Knob: Adjusts bass frequency level.
6. MID Knob: Adjusts midrange frequency level.
7. TREBLE Knob: Adjusts treble frequency level.
8. MUSIC VOLUME Knob: Master volume control for music playback.
9. Mode Button: Cycles through input modes (Bluetooth, USB, FM, AUX, Optical, Coaxial, Phono).
10. BT Button: Directly switches to Bluetooth mode.
11. STOP Button: Stops USB playback.
12. CH-/CH+ Buttons: For FM radio channel selection or USB track navigation.
13. AUX IN: 3.5mm auxiliary input jack.
14. USB Port: For USB drive playback (up to 64GB).
15. MIC 1/MIC 2 Inputs: 1/4'' microphone input jacks.

Rear Panel Connections

Figure 2: Rear Panel Layout of the Donner MAMP2 Amplifier, showing various audio input and speaker output terminals.

1. FM Antenna Terminal: Connect the included FM antenna for radio reception.
2. DIGITAL INPUTS (Optical/Coaxial): Connect digital audio sources like Smart TVs, Blu-ray players.
3. LINE INPUT (RCA): Connect analog audio sources such as CD/DVD players, media players.
4. PHONO INPUT (RCA): Connect a turntable with an MM (Moving Magnet) cartridge. Includes built-in preamplifier.
5. SPEAKER SYSTEM Outputs (L/R): Connect passive speakers (4-8 ohms). Supports up to 2 groups of 4 speakers.
6. SUBWOOFER Output: Connect an active subwoofer.
7. Power Cord Input: Connect the power cable to an AC outlet.

Setup Guide

1. Speaker Connection

The MAMP2 amplifier supports up to two groups of 4 passive speakers (4-8 ohms impedance) and one active subwoofer. Ensure correct polarity (+ to + and - to -) when connecting speakers.

Figure 3: Diagram showing how to connect passive speakers and an active subwoofer to the Donner MAMP2 amplifier.

• Connect your passive speakers to the "SPEAKER SYSTEM" terminals on the rear panel. The amplifier supports 2 channels, allowing for stereo sound.
• If using an active subwoofer, connect it to the "SUBWOOFER Output" on the rear panel.

2. Audio Source Connection

Connect your desired audio sources to the appropriate input jacks on the amplifier. The MAMP2 offers a variety of input options:

Figure 4: Overview of various audio input options available on the Donner MAMP2 amplifier, including Bluetooth, USB, AUX, FM, Microphone, CD/DVD, Phono, Coaxial, and Optical.

• RCA (LINE IN): For traditional audio devices like CD/DVD players.
• Optical/Coaxial (DIGITAL INPUTS): For digital audio from Smart TVs, game consoles, etc.
• Phono (RCA): For turntables with MM cartridges.
• AUX (3.5mm front panel): For portable devices like smartphones or tablets.
• USB (front panel): For USB flash drives (up to 64GB) containing audio files.
• Microphone (1/4'' front panel): For connecting microphones for karaoke or public speaking.
• FM Antenna: Connect the provided FM antenna to the rear terminal for radio reception.

3. Power Connection

• Once all audio and speaker connections are made, connect the power cord to the amplifier's power input and then to a suitable AC power outlet.

Operating Instructions

Powering On/Off

• Press the Power Switch on the front panel to turn the amplifier ON or OFF.

Selecting Input Mode

You can select the desired input source using the Mode button on the front panel or the corresponding buttons on the remote control.

Figure 5: Close-up of the Mode, BT, and Stop buttons on the front panel for input selection and playback control.

• Press the Mode button repeatedly to cycle through inputs: Bluetooth, USB, FM, AUX, Optical, Coaxial, Phono.
• Alternatively, press the dedicated input buttons on the remote control.

Bluetooth Operation

• Switch the amplifier to Bluetooth mode. The display will show "BLUE".
• On your mobile device, enable Bluetooth and search for "Donner MAMP2".
• Select "Donner MAMP2" to pair. Once connected, you can stream audio wirelessly.

Figure 6: Illustrates the process of pairing a mobile device with the Donner MAMP2 amplifier via Bluetooth.

USB Playback

• Insert a USB flash drive (formatted to FAT32, up to 64GB) into the front panel USB port.
• Switch to USB mode. The amplifier will automatically begin playing supported audio files.
• Use the CH-/CH+ buttons on the front panel or remote to navigate tracks. Press STOP to pause/stop playback.

FM Radio Operation

• Switch to FM mode.
• Use the CH-/CH+ buttons to manually tune to frequencies.
• For quick frequency selection, use the numeric keypad on the remote control (e.g., for FM 97.1, enter "971").

Figure 7: Demonstrates how to quickly select your favorite FM radio frequency using the remote control's numeric keypad.

Microphone and Karaoke Functions

• Connect microphones to the MIC 1 or MIC 2 1/4'' jacks on the front panel.
• Adjust microphone volume using the MIC VOL knob.
• Adjust echo effect using the ECHO knob.
• Press the Talk-over button to automatically lower background music when speaking into the microphone.

Customized EQ Control and Memory

The MAMP2 amplifier allows independent adjustment of Bass, Mid, and Treble levels via both the front panel knobs and the remote control. The amplifier automatically saves your last selected mode, volume, and EQ settings.

Figure 8: Illustration of the customizable EQ controls (Bass, Mid, Treble) on both the amplifier and remote, and the memory function.

• Rotate the BASS, MID, and TREBLE knobs on the front panel to adjust the respective frequency levels.
• Use the dedicated EQ buttons on the remote control for precise adjustments.

Phono Input (Turntable)

• Connect your turntable (with an MM type cartridge) to the PHONO INPUT RCA jacks on the rear panel.
• Switch the amplifier to Phono mode. The built-in preamplifier will boost the signal.

Figure 9: The Donner MAMP2 amplifier supports MM type turntables with its dedicated Phono input and built-in preamplifier.

Volume Control

• Adjust the overall music volume using the large MUSIC VOLUME knob on the front panel or the Volume +/- buttons on the remote control.

Maintenance

• Cleaning: Wipe the unit with a soft, dry cloth. Do not use liquid cleaners or aerosol sprays.
• Ventilation: Ensure the ventilation openings are clear of dust and debris to prevent overheating.
• Storage: If storing the amplifier for an extended period, disconnect it from the power outlet and store it in a cool, dry place.

Troubleshooting

Specifications

Warranty and Support

Donner products are designed and manufactured to the highest quality standards. For detailed warranty information and technical support, please refer to the warranty card included with your product or visit the official Donner website. Keep your purchase receipt as proof of purchase for any warranty claims.

For further assistance, please contact Donner customer service through their official channels.